In my assessment I am going to say how I think the concentration of acid effects the speed of a reaction. I will do this by using:
. Collision theory
. Kinetic theory
In this diagram the particles In this diagram the particles
have a low concentration have a higher concentration
of acid. Also there are of acid. There is the same
few marble chips for amount of marble chips, but
the particles to collide with. it will be easier for the
This is why there will be a particles to collide with each
slow reaction. other. This explains why
there is a faster reaction.
I would expect the graphs to look like this:
This graph shows that the reaction
is taking longer to happen. We can
tell this from the height of the line
The graph shows the opposite.
it shows the reaction is fast because
the line is steep.
We need to do a trial experiment because:
. We need to find out what volume of acid is needed.
. We need to know the amount of marble chips needed. (2-5g chips)
. We need to know what size measuring cylinder is needed. (Mins/secs)
If we do not do a trial experiment, we may get all the measurements wrong and the experiment will be useless.
Time in minutes Volume of CO2 made in cm3
From this trial experiment I have found:
. I will need 2 grams of marble chips
. I will need 4 different acids- 2m acid, 1.5m acid, 1m acid and 0.5m acid
. I will also need a larger measuring cylinder because the experiment was too fast and we did not get time to get a...